A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5905-01-451-0572
NSN 6650-00-016-3676
NSN 5960-00-275-7497
NSN 5998-01-245-1858
NSN 2925-00-295-8109
NSN 6240-00-274-4028
NSN 6135-00-477-8847
NSN 5975-01-301-1713
NSN 5950-00-369-1593
NSN 6620-00-188-4201
NSN 6240-01-653-9921
NSN 5998-01-326-0890